Answer:
The answer would be C
Explanation:
Senoras y senores,<u>sientense, </u>por favor.
The difference is that you would say sientate, to someone the same age as you. But, with an adult, you say sientense.
Hope this helps
Mi gusta leer
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Mk gusta correr
1. Ordenada
2 graciosos
3 estudiosas
4 reservados
5 bajo
6 atrevidos
7 sociable